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Class D Switching Power Amplifiers and Power D/A conversion

Cheap simple class D amp circuit to build.
Cheap simple class D amp circuit to build.
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Old 18th May 2007, 03:33 PM   #1
guitar_joe is offline guitar_joe  Australia
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Default Cheap simple class D amp circuit to build.

Can somebody please post me a link to a dead simple class D amp that could be built on a bread board.

I just want to build one to see how they work for educational purposes.

Any leads on this would be fantastic

cheers
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Old 18th May 2007, 03:55 PM   #2
BWRX is offline BWRX  United States
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A fully discrete circuit or one based around a chip?
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Old 18th May 2007, 03:59 PM   #3
guitar_joe is offline guitar_joe  Australia
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i think fully descrete would be the best way to go
I know it's not good for performance but it's
mainly for educational purposes
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Old 18th May 2007, 04:32 PM   #4
BWRX is offline BWRX  United States
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Fortunately you can have both

http://www.diyaudio.com/forums/showt...threadid=85389
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Old 19th May 2007, 09:31 AM   #5
guitar_joe is offline guitar_joe  Australia
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cool. cheers
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Old 19th May 2007, 11:39 AM   #6
alfsch is offline alfsch  Germany
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look, my cheap-d :
http://sodfa.so.ohost.de/content/ima...MK1-1b.sch.pdf
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Old 20th May 2007, 09:03 PM   #7
v-bro is offline v-bro  Netherlands
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Not discrete, but I've seen people build 41hz.com AMP6 on a breadboard...

It is pretty cheap...
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Old 21st May 2007, 07:57 AM   #8
luka is offline luka  Slovenia
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Cheap simple class D amp circuit to build.
Hi alfsch

How does your circuit work?
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Old 21st May 2007, 09:06 AM   #9
alfsch is offline alfsch  Germany
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its a simple selfosz. amp, "ucd" style...
here test with 5khz,1w ,8 ohm:
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Old 22nd May 2007, 12:08 PM   #10
luka is offline luka  Slovenia
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Cheap simple class D amp circuit to build.
Hi alfsch

Could you post some waveforms of the amp. Like output with no signal,... any
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